TextMate Blogging Bundle workaround

Thursday, April 26, 2007

I like to use the blogging bundle from the great text editor TextMate to do my posting here. The other day I encountered an error that gave me some problems, and I just want to point out a workaround. After posting to this blog, I received and error that went something like this…

Received exception:Wrong size. Was 1275, should be <unknown>

Read the rest of this entry »


Setting Your MTU

Wednesday, April 25, 2007

So to follow up with the previous post about MTU and MSS, I wanted to show you how to set the MTU value on your computer. On most Unix-like boxes it is a fairly straight forward process to change your MTU. On Windows it gets a little trickier with registry changes and such things that can brick your computer.

Read the rest of this entry »

Busy This Week, Here’s A tcpdump example

Friday, April 20, 2007

I have been behind in my posts, and I have quite a few items to get posted. Today I wanted to walk through an example of tcpdump can be useful when tracking down malicious traffic on your network. I am going to use the example of IrnBot to demonstrate a handy technique. IrnBot (named after the Scottish drink IrnBru), also popularly known as Rinbot, produces a lot of traffic on port 1433, 2967 and 139. It also opens up a connection to irc servers on the outside over port 8080.

Read the rest of this entry »

Getting stats with awk, sort and uniq

Saturday, April 14, 2007

I find myself sorting through logs all the time, and I have developed a couple of tricks for pulling the information I need out. With a little awk, sort and uniq magic you can get a great deal of info out of your logs.

Read the rest of this entry »

More Fun With tcpdump and Resets

Tuesday, April 10, 2007

Here is another handy little trick for tcpdump that will help you identify some potential network issues. Often times when there is some trouble along the line you will see reset connections. This happens for many reasons and can be an indication of everything form a network program to a crashed application that suddenly stops responding.

Read the rest of this entry »

Quicksilver Setup

Friday, April 6, 2007

When I was getting started using Quicksilver I was always hearing about all the great things it would do, but it was a struggle to get it set up the right way to get at that functionality. In order to prevent that struggle for others I am including my basic set up.

Read the rest of this entry »

Selling the Quicksilver Magic

Friday, April 6, 2007

I keep telling everyone they need to try out Quicksilver, that it is the most amazing app. Then they ask me what it does, and I generally say, “it’s hard to explain.” Which it is. Then I fumble around to demonstrate a few things that never seems to do it justice. I need Ron Popeil to pop out and say, “but wait, there’s more.”

Read the rest of this entry »